James milne



(No Model.)

J. MIL-NE.

HAND NAILING IMPLEMENT. 8 No. 398,118. Patented Nov. 20, 1888.

llllllllllll llllll n, Packs. Pllolomlwgnpber. wummm, ac-

UNITED STATES PAT NT OF ICE.

JAMES MlLNE, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO M. D.

- BARR, OF SAME PLACE. v

HAND NAILING IMPLEMENT.

SPECIFICATION forming part of Letters Patent No. 393,118, dated November 20, 1888.

Application filed April 11, 1888. Serial No. 210,263.

To all whom it may concern.-

Be it known that I, JAMEs MILNE, of Mon-- treal, in the Province of Quebec, Canada, have invented an Improvement in Hand Tackers or Nailers, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to that class of apparatus known as hand tackers or nailers, applicable, among other things, for lasting boots and shoes.

Prior to my invention I am aware that hand tackers or mailers have been constructed to operate upon one of a series of tacks or nails connected together at their heads, or at their heads or points, or held in a paper or other strip.

This invention has for its object to provide a hand tacker or nailer by which the tacks or nails may be formed from a continuous Wire, either plain, corrugated, or barbed, the said Iacker or nailer at one operation feeding the wire forward to be cut oft to form a tack or nail, the portion of wire so cut off being automatically brought into position to be acted upon by the driver, by which the said severed portion is driven into the stock.

The particular features of my invention will be pointed out in the claims at the end of this specification.

Figure l is a side elevation, partially broken out, of a hand tacker or nailer embodying my invention; Fig. 2, an under side view of the cover or top plate of the iuclosing-ease and at tached driver and plunger removed,the driven guide being broken out; Fig. 3, an interior view of the inclosingcase, it showing the guideway for the wire, the feeding mechanism, aud cutters for the wire; and Fig. 4, a sectional detail showing the two rolls for feeding the wire.

The case a, provided with the cover or top plate, a, contains the usual reciprocating plunger, a, to which is attached a driver, a, the said case and cover being each provided, as shown, with a semicircular flange, a which together form a tubular socket (see Fig. 1) to receive one end of a spiral spring, a encircling the said plunger and acting to restore (No model.)

the latter to its normal position after a blow has been given and a tack or nail has been formed and discharged from the tacker or nailer, as will be described.

The case a supports a wire-feed mechanism, herein shown as two milled wheels, a a (see Figs. 3 and 4,) having their arbors a a" respectively inserted into holes in the bottom of the said case and in the bushing or hub a, the hole in the bushing a being eccentric, so that by turning the said bushing the wheel a may be adjusted with relation to the wheel a to enable a wire of greater or less diameter to be fed forward to be acted upon, the wheel a being secured in its adjusted position by set-screw a, the said. feed, as shown, being a friction feed.

The wheel a has mounted upon its arbor a ratchet-wheel, a engaged and rotated by a pawl, a", heroin shown pivoted, as at a on a pawl-carrying disk, a", provided with a lug or projection, a, which extends or lies in the path of movement of a feed-operating device, herein shown as a bar, I), on the under face of the plunger a the said pawl being kept in engagement with the teeth of the ratchetwheel a by a spring, I), carried by the disk at.

The Wire 11, which may be plain, corrugated, or barbed,and which is to be cut into suitable or desired lengths to form tacks or nails,is taken from a roll (not shown) and first passed through a suitable opening in the side of the case and through a guideway, If, (see Fig. 1,) formed in a bar, I), secured to the case a.

The wire, after passing between the feed wheels, is passed through a guideway, shown as a bar, 1), extended substantially the length of the case a, and secured in position by a bracket, 11*, fastened to the said case.

The case a supports cutters or knives If b, having their cutting edges adjacent to the mouth or outlet of the guide-bar b, the cutter If being rigidly fixed to the case a, as herein shown,by screw b, (see Fig. 1,) and the cutter If movable, it being made as part of a bar pivoted as at I). The bar of the pivoted cutter 1) extends, as shown, substantially the length of the guidebar b", and at its upper end is provided with a stud or projection, I), (see Fig. 3,) which extends into a cam groove or slot,

I), in the under face of the plunger c the said camslot turning the knife b on its pivot to operate the said knife, as will be described.

The bottom of the oasea is slotted at its front end,and co-operating with the said slot to form a passage or guideway for a nail-transferring bar, 0, are twolugs or cars, of nozzle or nipple c", the said nozzle being secured to the case a, as shown, by screw 0. The transferring-bar 0 projects below the bottom of the case a and is provided with a pin or stud, c, which is engaged by the forked end of a lever, 0, extended through a slot in the bottom of the case a, and pivoted, as at 0, within the said case. The bar 0 at its upper end is provided with a hole or guideway, c, to receive the portion of the wire to be severed from the continuous wire to form the tack or nail.

The transferring-bar c is turned into its normal or full-line position, as shown in Fig. 1, by a spring, a acting on the arm 0 of the lever 0 The top plate or cover, a, has secured to its under side a guide-block, c", for the driver (1 In the operation of my improved tacker or nailer let it be supposed that the wire has been fed forward by repeated blows upon the head of the plunger until the end of the said wire is substantially flush with the mouth or outlet of the guide-bar b, and that the operating parts of the tacker or nailer are in the position shown by full lines, Fig. 1. \Vith the parts in this position the pin or stud Z) is at the extreme forwardend of the cam slot or groove 0, as shown in Fig. 2. The plunger is now driven forward byablow upon its head, and as the said plunger moves forward the feedwheels are rotated to feed the wire forward out of the guide-bar I) into the hole c in the trans ferring-bar c by the end of the bar I) acting on thelug or ear a of the ratchetcarrying disk a. The groove or slot 1) rides over the stud b on l the pivoted cutter I) as the plunger is moved forward, and the said pivoted cutter remains inactive until the cam portion, as 2, of the slot or groove b strikes the stud b, when the said cutter is turned on its pivot to move the cutting-edge of the said cutter into engagement with the wire between the end of the guidebar I) and the transferring-bar. c, the said cutter severing that portion of the wire in the hole 0 in the transferring-bar from the wire in the guide-bar I), when the straight portion 3 of the slot 22 meets the stud b. As the straight portion 3 of the cam slot 1) engages the stud b the end of the plunger begins to act on the arm 0 of the lever 0". As the said plunger continues to move forward, the said lever is turned on its pivot, the arm 0 being depressed while the forked end of the said lever with the engaged transferringbar c is raised, the hole 0*, containing the severed portion of the wire, which in practice forms the tack or nail, being thus broughtinto line with the hole 0 (see Fig. 2) in the guide-block 0". With the hole 0* in the carrying-block in line with the hole 0 in the guide-block,the driver a on the further forward movement of the plunger acts on the tack or nail and discharges it through the nozzle 0 into the stock. After the wire tack or nail has been discharged from the nozzle 0 the pressure is removed from the plunger, whereupon the spring a restores the said plunger to its normal or full-line position. (Shown in Figs. 1 and 2.) As the plunger is restored to its normal position the lug or ear a is engaged by the bar d on the plunger and the pawl-carrying disk at and feed-wheel a turned on the arbor of the latter into their normal position-s, the said feed-wheel turning freely without effecting a backward feed of the wire. When the plunger in its backward movement has cleared the arm 0 of the lever 0 the latter is acted upon by the spring a and the transferringbar restored to its normal position, with its hole in line with the mouth or outlet of theguidebar b.

In practice the feeding of the wire, the cutting thereof, the raising of the transferringbar, and the drawing of the severed wire tack or nail are substantially instantaneous.

I claim- 1. In a hand tacker or nailer, the combination,with the case a and wire-feed mechanism supported by said case, of a guide for said wire, a fixed cutter, and a movable cutter provided with a stud or projection, as If, and supported by the said case, a transferring-bar provided with a guideway to receive the severed portion of the wire, and a nozzle or nipple provided with an opening through which the severed wire is discharged, and a plunger to actuate the said feed mechanism, cutters, and transferring-bar, and a driver to discharge the wire tack or nail,substantially as described.

2. In a hand tacker or nailer, the combination, with the case a and wire-feed mechanism supported thereby,ofaguide-bar,b,afixed cut- ICC ter, and a pivoted cutter secured to the said case, a cover for said ease provided with a guide-bar, 0, a nozzle or nipple having a discharge-opening out of line with the opening in the guide-bar b, a transferring-bar having a guideway normally in line with the guidebar I) to receive the wire from the said guidebar, a plunger, and a driver reciprocating in the guide bar 0 the said transferring-bar placing the severed portion of the wire in line with the discharge-nozzle and driver on the movement of the plunger, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES MILNE.

Witnesses:

W. J. FREEMAN, A. LABBE.

IlO 

